Gearing for sawmills.



W. E. CAREY.

GEARING FOR SAWMILLS.

APPLIOATION FILED MAR. 27, 1909.

964,750, I Patented July 19, 1910.

2 BHEETSSHEET 1.

THE NORRIS psrsws ca, WASHIMCTDN, n4 4:. w

W. E. CAREY.

GEARING FOR SAWMILLS.

APPILIOATION FILED MAR. 27, 1909.

96%,750, I Patented July 19, 1910;

2 SHEETS-SHEET 2;

3111mm to:

Witnaoaeo 1m: NORRIS ps-rsns 00..WA5HINGTON, D. c.

marsh srarns rn'ranr orrion.

WILLIAM E. CAREY, F CAMBRIDGE, MARYLAND.

GEARING FOR SAWMILLS.

To all whom it may concern:

Be it known that I, VILLIAM E. CAREY, a citizen of the United States,residing at Cambridge, in the county of Dorchester and State ofMaryland, have invented certain new and useful Improvements in Gearingfor Sawmills, of which the following is a specification.

My invention relates to improvements in saw mills, and more particularlyto an improved gearing for saw mills, and improved means for mountingand operating a shifting friction pulley, whereby the pulley is moved ina straight line to engage either of two friction wheels driven inopposite directions, so to regulate the direction of movement of thetable.

A further object is to provide an improved table operating shaft havinga universal joint between its ends, an eccentric mounting for saidshafts, together with a friction pulley on said shaft, and improvedmeans for simultaneously turning said eccentric mountings, so as to movethe shaft on which the friction pulley is secured in a horizontal linewithout pivotal movement.

With these and other objects in view, the invention consits in certainnovel features of construction, and combinations and arrangements ofparts as will be more fully hereinafter described and pointed out in theclaims.

In the accompanying drawings, Figure 1, is a plan view illustrating myimprovements. Fig. 2, is a View in longitudinal section on the line 22of Fig. 1. Fig. 3, is a View in cross section on the line 33 of Fig. 1.Figs. 4: and 5, are views illustrating details of construction.

1 represents the longitudinal bars of the frame, secured to the upperportion of parallel. cross bars 2, and 3 is a longitudinal bar securedto one end of the cross bars 2.

To the longitudinal bars 1, bearings 4; are secured and support adriving shaft 5 on which a driving pulley 6 is secured to receive powerfrom any desired source. This shaft 5 is adapted to revolve the saw 7secured upon its end as clearly shown, and pulleys 8 and 9 of differentdiameters are fixed to the shaft 5, and are adapted to transmit motionby means of a belt 10 to similar pulleys 11 and 12 respectively on ashaft 13, supported in bearings on bars 1. By means of these pulleys ofdifferent di- Specification of Letters Patent.

Application filed March 27, 1909.

Patented July 19, 1910;

Serial No. 486,106.

ameters, the belt can be shifted, so as to Vary the speed transmittedfrom one shaft to the other, as will be readily understood.

1% represents the table operating shaft having'a pinion 15 thereon,meshing with a rack 16 onatable 17, the latter being shown fragmentaryin Fig. 1. The shaft 14 is made in two sections connected by a universaljoint 18, and at one end is mounted in a pivoted bearing 19 on bar 3.The other or inner section of shaft 14; is eccentrically mounted indisks-20, the latter mounted in bearings 21 secured to bars 1. A pulley22 is fixed to shaft 14, and is adapted to be moved, as will behereinafter explained, into frictional engagement with a small pulley 23on shaft 13, or into frictional engagement with a pulley 24,transmitting motion from a pulley 25 on shaft 5.

The pulley 241 is mounted in a fork 26, the latter is adj ustablysecured in a split clamping collar 27 on a cross rod 28. This fork isadjustably secured by means of nuts 29, which enable the pulley to bemoved up and down and regulate the frictional contact, which is adesirablefeature, as the face of the pulley 24 becomes worn, and themovement of pulley 22 is necessarily more or less limited, and byadjusting. pulley 241 the proper contact can be had.

Upwardly projecting arms 30 are secured to disks 20, and are pivotallyconnected by links 31 with crank arms 32 on a shaft 33. One of thesecrank arms 32 is connected by a link 84: with a lever 35, which latteris to be manually operated, as will now be eX- plained.

l/Vhen the upper end of lever 35 is forced outwardly, the eccentricallymounted shaft 14 will be moved to the left as in Fig. 2, and will firmlyengage pulley 24 and force the same into tight engagement with pulley25, thus transmitting motion from pulley 25 to shaft 14 to drive thetable 17 in one direc tion. When the lever 35 is moved inwardly, theshaft 14 will be moved to the right by reference to Fig. 2, and to theleft by reference to Fig. 4, so as to press thepulley 22 into tightengagement with pulley 23, and hence motion will be transmitted fromshaft 5 to shaft 13 through the medium of belt 10, and directly fromshaft 13 to shaft 1 1 to drive the table 17 in an opposite direction tothat above described. When the lever is moved to an intermediateposition, the pulley 22 will not frictionally engage either of thepulleys 23 or 24, and hence the shaft let and table 17 will stop.

Various slight changes might be made in the general form and arrangementof parts described without departing from my invention, and hence I donot restrict myself to the precise details set forth, but considermyself at liberty to make such changes and alterations as fairly fallwithin the spirit and scope of the claims.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In an apparatus of the character described, the combination with aframe, bearings on the frame, and disks mounted to turn in saidbearings, of a shaft comprising two sections, a universal jointconnecting the sections, a pivoted bearing supporting one end of onesection, the other section eccentrically mounted in said disks, afriction pulley on said shaft, friction pulleys in line with theperiphery of said first mentioned pulley and on opposite sides thereof,and means for turning said disks to move the shaft and position thefirst mentioned pulley into frictional engagement with either of saidlast mentioned pulleys.

2. In an apparatus of the character described, the combination with aframe, a driving shaft'on the frame, a driven shaft on the frame,friction pulleys on said shafts, a countershaft driven by said drivingshaft, a friction pulley on said countershaft, a friction pulley betweenthe pulleys on the drivingand driven shafts, a rod supported on theframe, a fork supporting said last mentioned pulley, a split collar onthe rod, and

nuts on said fork, whereby said friction pulley can be adjusted tocompensate for wear. In testimony whereof I have signed my name to thisspecification in the presence of two subscribing witnesses.

, WILLIAM E. CAREY. Witnesses: V 7 JOHN B. -NABB,

W. S. HODDINOTT.

